Conductive film, display device equipped with same, and method for determining pattern of conductive film

Abstract

The conductive film has a wiring pattern which, with respect to the frequencies and intensities of moire obtained by applying a human visual response characteristic to the frequency information and intensity information of moire calculated from peak frequencies and peak intensities of the two-dimensional Fourier spectrums of the transmittance image data of the wiring pattern and the transmittance image data of a pixel array pattern, causes the sum of intensities of moire each corresponding to frequencies of moire falling within a frequency range predetermined depending on the visual response characteristic to be less than or equal to a predetermined value. The conductive film allows suppression of moire and significant improvement in visibility.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of International Application No. PCT / JP2013 / 055036 filed on Feb. 27, 2013, which claims priority under 35 U.S.C. §119(a) to Japanese Patent Application No. 2012-082711 filed on Mar. 30, 2012. Each of the above applications is hereby expressly incorporated by reference, in its entirety, into the present application.BACKGROUND OF THE INVENTION[0002]The present invention relates to a conductive film, a display device equipped with the conductive film, and a method for determining a pattern of the conductive film.[0003]Examples of a conductive film installed on a display unit of a display device (hereinafter also referred to as “display”) include a conductive film for electromagnetic shields and a conductive film for touch panels (for example, see JP 2009-117683 A and JP 2011-216379 A).[0004]JP 2009-117683 A, a published patent application filed by the same applicant as the present application, discloses tha...

AI Technical Summary

Benefits of technology

The present invention aims to provide a conductive film that can suppress the occurrence of moé to improve visibility. The invention calculates the frequency / intensities of moé from the peak frequencies / intensities obtained by frequency analysis of the pixel array pattern of the display device and the wiring pattern of the conductive film. The calculated intensity and frequencies of moé are limited to prevent deterioration of image quality and achieve excellent visibility. The invention also relates to a display device equipped with this conductive film and a method for determining the pattern of the film. The technical effect of this invention is to considerably improve the visibility of the display on the touch panel.

Problems solved by technology

Since human perception of moire is influenced by intensity as well as frequency, moire may be visually recognized depending on the intensity even at a frequency at which moire is not determined to be visually recognized in JP 2009-117683 A, and thus there is a problem in that the wiring pattern of the conductive film is not adequately improved in visibility of moire.

Particularly when the technology of JP 2009-117683 A is applied to a conductive film for touch panels, since the conductive film is pressed with a finger or the like, a delicate distortion occurs between the BM / wiring patterns, and accordingly there is a problem in that visual recognition of moire due to intensity is promoted, leading to an inadequate improvement in moire visibility.

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